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   <div id="projectname">hybridMPIC
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   <div id="projectbrief">A fully relativisitic 2d Particle-In-Cell(PIC) code, with explicit solver, MPI&amp;OpenMP support</div>
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<div class="header">
  <div class="headertitle">
<div class="title">events.h</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#ifndef __events</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#define __events</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="preprocessor">#include&quot;particles.h&quot;</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &quot;physicalconstants.h&quot;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include&quot;type.h&quot;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#include &quot;userdef.h&quot;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor">#include &lt;random&gt;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &lt;algorithm&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">// 应该吧这两个函数放到common中。</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"></span><span class="comment">//template&lt;typename __Ty&gt; </span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">//int bs_search(const __Ty&amp; param, const vector&lt;__Ty&gt;&amp; matrix)</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="keywordtype">int</span> bs_search(<span class="keywordtype">double</span>&amp; param, vector&lt;double&gt;&amp; matrix)</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;{</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    vector&lt;double&gt;::iterator locator;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;    locator = lower_bound(matrix.begin(), matrix.end(), param);</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    <span class="keywordtype">int</span> ret = (locator - matrix.begin()) - 1;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    <span class="keywordflow">if</span>(ret == matrix.size())</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    {</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;        ret = - 1;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    }</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    <span class="keywordflow">if</span>(ret == 0)</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    {</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;        ret = -1;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    }</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;}</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="keywordtype">double</span> init_velocity(<span class="keyword">const</span> <span class="keywordtype">double</span>&amp; lorentz_gamma)</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;{</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keywordflow">return</span> c_light_speed * sqrt(1.0 - 1.0 / lorentz_gamma / lorentz_gamma);</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;}</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keywordtype">double</span> random_generator()</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;{</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;  std::random_device rd;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;  std::mt19937 gen(rd());</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;  std::uniform_real_distribution&lt;&gt; distribution(0.0, 1.0);</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;  <span class="keywordflow">return</span> distribution(gen);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;}</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="keywordtype">void</span> init_ptcls(<a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; myptcl)</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;{</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  myptcl.od_factor = 0.0;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;  myptcl.rod_factor = - log(1.0 - random_generator());</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;}</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> __Ty&gt;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<a class="code" href="../../da/d1a/class____Vect3.html">__Vect3&lt;__Ty&gt;</a> normalize(<a class="code" href="../../da/d1a/class____Vect3.html">__Vect3&lt;__Ty&gt;</a>&amp; normalizer)</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;{</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="keywordflow">return</span> normalizer / Mod(normalizer);</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;}</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="keywordtype">void</span> update_qed_factor(<a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; particle)</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;{</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="keywordflow">switch</span>(particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a190602549e77f92d18694bfac93774de">species</a>)</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    {</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        <span class="keywordflow">case</span> 0:</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;            {</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;                particle.qed_factor = particle.lorentz_gamma * Mod(particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a9df3807cf12885312f760d8c7b400365">efield</a> - \</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;                        (particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> * particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a9df3807cf12885312f760d8c7b400365">efield</a>) * particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> / \</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                        (particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> * particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>) + Cross(particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>,\</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                            particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#aeff96eb3ac159cdefef7f8e2fd03f49f">bfield</a>)) / E_crit;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;            }</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;                particle.qed_factor = particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> * Mod(particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a9df3807cf12885312f760d8c7b400365">efield</a> - \</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;                        (particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> * particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a9df3807cf12885312f760d8c7b400365">efield</a>) * particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> / \</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;                        (particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> * particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>) + Cross(particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>, \</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;                                particle.<a class="code" href="../../d9/ddf/class____Ptcls.html#aeff96eb3ac159cdefef7f8e2fd03f49f">bfield</a>)) / E_crit / 2.0 / mc2;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    }</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;}</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="comment">// 可能有2个表0,eta, 1, chi, 2 f, 3 h(eta), 4 T(chi), 5 chi for T, 6 eta for h</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">// 0 Pchi(eta, chi)  1, Pf(f, chi), 2: chi(eta, P)</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment">// 返回值代表新的粒子个数</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="keywordtype">int</span> synchrotron_rad(<span class="keyword">const</span> <span class="keywordtype">double</span>&amp; dt, <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; parent, <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; child,\</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        vector&lt;vector&lt;double&gt; &gt;&amp; table, vector&lt;vector&lt;vector&lt;double&gt; &gt; &gt;&amp; table_P)</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;{</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;in syn&quot;&lt;&lt;endl;</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;parent beta is &quot;&lt;&lt;Mod(parent.velocity) / c_light_speed&lt;&lt;&quot; field &quot;\</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">        &lt;&lt;parent.efield&lt;&lt;endl;</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    <span class="keywordtype">double</span> local_const = 9.81509e+18;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <span class="keywordflow">if</span>(parent.od_factor &lt;= 1e-10)</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    {</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        <span class="comment">//cout&lt;&lt;&quot;initing rod&quot;&lt;&lt;endl;</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        init_ptcls(parent);</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    }</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    update_qed_factor(parent);</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    <span class="keywordtype">double</span> temp_qed = log10(parent.qed_factor);</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="keywordtype">int</span> eta_index = bs_search(temp_qed, table[0]);</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    <span class="keywordtype">int</span> eta_index_h = bs_search(temp_qed, table[6]);</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    </div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    <span class="keywordflow">if</span>(eta_index &lt; 0 || eta_index &gt; table[0].size())</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    {</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    }</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    </div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;eta index &quot;&lt;&lt;eta_index_h&lt;&lt;&quot; heta &quot;&lt;&lt;table[3][eta_index_h]&lt;&lt;endl;</span></div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    parent.od_factor += dt * table[3][eta_index_h] * parent.qed_factor / parent.lorentz_gamma * local_const;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;local const is &quot;&lt;&lt;sqrt(3.0) * alpha_fine * c_light_speed / lambda_compton;</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;od factor now &quot;&lt;&lt;parent.od_factor&lt;&lt;&quot; rod is &quot;&lt;&lt;parent.rod_factor&lt;&lt;endl;</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    <span class="keywordflow">if</span>(parent.od_factor &lt; parent.rod_factor)</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    {</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    }</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    <span class="keywordtype">double</span> random_P = random_generator();</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <span class="comment">// Ｐ是chi 和eta的函数</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    <span class="keywordtype">int</span> chi_index = bs_search(random_P, table_P[0][eta_index]);</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    <span class="keywordflow">if</span>( chi_index &lt; 0 || chi_index &gt; table_P[2][eta_index].size() - 1)</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    {</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    }</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keywordtype">double</span> chi_f = pow(10.0, table_P[2][eta_index][chi_index]);</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="comment">//很明显ＩＤ这东西没法通用了</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    child = parent;</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#a190602549e77f92d18694bfac93774de">species</a> = 3;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#aec1deca97ac099553420c1f9cc138b3b">charge</a> = 0.0;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#a4c8ff1d2388163601e00c6685af2859a">mass</a> = 0.0;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; parent &quot;&lt;&lt;parent&lt;&lt;endl;</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> = 2.0 * mc2 * chi_f * parent.lorentz_gamma / parent.qed_factor;</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;parent &quot;&lt;&lt;parent.species&lt;&lt;&quot;\t&quot;&lt;&lt;parent.energy/MeV&lt;&lt;\</span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="comment">        &quot; MeV_____photon generated with ek &quot;\</span></div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="comment">        &lt;&lt;child.energy/MeV&lt;&lt;&quot; MeV______&quot;&lt;&lt;&quot;\t&quot;&lt;&lt;parent.lorentz_gamma&lt;&lt;endl;</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> = c_light_speed * normalize(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>);</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    update_qed_factor(child);</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    init_ptcls(child);</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    init_ptcls(parent);</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    <span class="comment">//parent.energy = parent.energy - child.energy;</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    <span class="comment">//parent.lorentz_gamma = parent.energy / mc2;</span></div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;    parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> = parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> * (1.0 - child.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> / \</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;            (c_light_speed * Mod(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>)));</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <span class="keywordflow">if</span>(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> &lt; 0)</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    {</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        cout&lt;&lt;<span class="stringliteral">&quot; parent negative energy &quot;</span>&lt;&lt;parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>&lt;&lt;endl;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;        <span class="comment">//getchar();</span></div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    }</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    <span class="keywordflow">if</span>(child.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> &lt; ekmin)</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    {</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    }</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    cout&lt;&lt;<span class="stringliteral">&quot; child energy is &quot;</span>&lt;&lt;child.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>/KeV&lt;&lt;<span class="stringliteral">&quot; KeV &quot;</span>&lt;&lt;<span class="stringliteral">&quot;parent energy &quot;</span>&lt;&lt;parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>/KeV&lt;&lt;<span class="stringliteral">&quot; KeV&quot;</span>&lt;&lt;endl;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;}</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="keywordtype">int</span> bremsstrahlung_rad(<span class="keyword">const</span> <span class="keywordtype">double</span>&amp; dt, <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; density, \</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; parent, <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; child, vector&lt;vector&lt;double&gt; &gt;&amp; tables1d, \</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;        vector&lt;vector&lt;vector&lt;double&gt; &gt; &gt;&amp; tables2d)</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;{</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    </div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keywordtype">int</span> energy_index = bs_search(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>, tables1d[0]);</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;ek index &quot;&lt;&lt;energy_index&lt;&lt;&quot;\t&quot;&lt;&lt;parent.energy&lt;&lt;&quot;\t&quot;&lt;&lt;parent.id&lt;&lt;&quot;\t&quot;&lt;&lt;parent.species&lt;&lt;endl;</span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    <span class="comment">//getchar();</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    <span class="keywordflow">if</span>(energy_index &lt; 0)</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    {</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    }</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="comment">//energy_index = (random_generator() &gt; (log(tables1d[0][energy_index + 1]) - \</span></div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="comment">                log(parent.energy)) / (log(tables1d[0][energy_index + 1]) - \</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="comment">                log(tables1d[0][energy_index])))?energy_index:(energy_index + 1);</span></div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; ph f_index &quot;&lt;&lt;energy_index&lt;&lt;endl;</span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    <span class="keywordtype">int</span> max_ind = tables1d[0].size();</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    <span class="keywordtype">double</span> sigma_total = tables2d[0][energy_index][max_ind - 1];</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    <span class="keywordtype">double</span> freq = Mod(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>) * density * sigma_total * dt;</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    <span class="keywordtype">double</span> probability = 1.0 - exp(-freq);</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; parent ek &quot;&lt;&lt;parent.energy&lt;&lt;&quot; in table &quot;&lt;&lt;tables1d[0][energy_index]&lt;&lt;endl;</span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;prob is &quot;&lt;&lt;probability&lt;&lt;&quot; with freq &quot;&lt;&lt;freq&lt;&lt;&quot; density &quot;&lt;&lt;density&lt;&lt;&quot;vel&quot;&lt;&lt;Mod(parent.velocity)&lt;&lt;endl;</span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    <span class="keywordtype">double</span> myrand = random_generator();</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keywordflow">if</span>(myrand &gt; probability)</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    {</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    }</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;prob is &quot;&lt;&lt;probability&lt;&lt;&quot; myrand is &quot;&lt;&lt;myrand&lt;&lt;endl;</span></div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;may be will emit photons&quot;&lt;&lt;endl;</span></div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    <span class="keywordtype">double</span> sigma = sigma_total * random_generator();</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;    <span class="keywordtype">int</span> ph_index = 0; </div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <span class="keywordflow">while</span>(ph_index &lt;= 0)</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;    {</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;        sigma = sigma_total * random_generator();</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        ph_index = bs_search(sigma, tables2d[0][energy_index]);</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    }</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;ph_index is &quot;&lt;&lt;ph_index&lt;&lt;&quot; ek f_index &quot;&lt;&lt;energy_index&lt;&lt;endl;</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    child = parent;</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <span class="keywordtype">double</span> ek_ratio = tables1d[1][ph_index] + \</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;                      (tables1d[1][ph_index + 1] - tables1d[1][ph_index]) / \</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;                      (tables2d[0][energy_index][ph_index + 1] - \</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;                       tables2d[0][energy_index][ph_index]) * \</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;                       (sigma - tables2d[0][energy_index][ph_index]);</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;    <span class="comment">//cout&lt;&lt;&quot;ek child is now &quot;&lt;&lt;ek_ratio&lt;&lt;endl;</span></div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> *= ek_ratio;</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#a190602549e77f92d18694bfac93774de">species</a> = 3;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#aec1deca97ac099553420c1f9cc138b3b">charge</a> = 0.0;</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#a4c8ff1d2388163601e00c6685af2859a">mass</a> = 0.0;</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    <span class="comment">//double costheta = calc_angular(parent.velocity);</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    child.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> = c_light_speed * normalize(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>);</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    update_qed_factor(child);</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    init_ptcls(child);</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    init_ptcls(parent);</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;    <span class="comment">//这两项在boris　中更新</span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    <span class="keywordtype">double</span> old_gamma = parent.lorentz_gamma;</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> = parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> - child.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>;</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    parent.lorentz_gamma = parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> / mc2 + 1.0;</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    </div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> = parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> * old_gamma / parent.lorentz_gamma - normalize(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>) * \</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;                      child.energy / parent.lorentz_gamma / parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a4c8ff1d2388163601e00c6685af2859a">mass</a> / c_light_speed;</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;    <span class="keywordflow">if</span>(child.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> &lt; ekmin)</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;    {</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    }</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;}</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">/***</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">double calc_angular(const __Vect3&lt;double&gt;&amp; velocity)</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="comment">{</span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="comment">    double ran1 = random_generator();</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="comment">    double ran2 = random_generator();</span></div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="comment">    double ct = 2.0 * ran2 - 1.0;</span></div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment">    double beta = normalize(velocity) / c_light_speed;</span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="comment">    </span></div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">***/</span></div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment">// 可能有2个表0,eta, 1chi, 2 f, 3 h(eta), 4 T(chi), 5, chiforT, 6, etaforh</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment">// Pchi(eta, chi) Pf(chi, f), chi(eta, P)</span></div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="comment">// 返回值代表新的粒子个数</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;<span class="keywordtype">int</span> bw_pair_create(<span class="keyword">const</span> <span class="keywordtype">double</span>&amp; dt, <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; parent, <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; child0, <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; child1, \</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;        vector&lt;vector&lt;double&gt; &gt;&amp; table, vector&lt;vector&lt;vector&lt;double&gt; &gt; &gt;&amp; table_P)</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;{</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    <span class="keywordflow">if</span>(parent.rod_factor == 0)</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    {</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;        <span class="comment">//cout&lt;&lt;&quot;initing rod&quot;&lt;&lt;endl;</span></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;        init_ptcls(parent);</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    }</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;    update_qed_factor(parent);</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;    <span class="keywordflow">if</span>(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> &lt;= 2.0 * mc2)</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    {</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        <span class="comment">//cout&lt;&lt;&quot; energy too small &quot;&lt;&lt;parent.energy&lt;&lt;&quot; J, &quot;&lt;&lt;parent.energy/MeV&lt;&lt;&quot; MeV&quot;&lt;&lt;endl;</span></div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    }</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    <span class="keywordtype">double</span> temp_qed = log10(parent.qed_factor);</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    <span class="keywordtype">int</span> chi_index_T = bs_search(temp_qed, table[5]);</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="keywordflow">if</span>(chi_index_T &lt; 0 || chi_index_T &gt; table[5].size())</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    {</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;        <span class="comment">//cout&lt;&lt;&quot;invalid chi_index_T &quot;&lt;&lt;chi_index_T&lt;&lt;&quot;\t&quot;&lt;&lt;parent.qed_factor&lt;&lt;&quot;\t field &quot;\</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;<span class="comment">            &lt;&lt;parent.bfield&lt;&lt;&quot;\t&quot;&lt;&lt;parent.efield&lt;&lt;&quot;\t&quot;&lt;&lt;Mod(parent.velocity) / c_light_speed&lt;&lt;endl;</span></div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    }</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    parent.od_factor += 2.0 * PI * alpha_fine * e_mass * c_light_speed * c_light_speed /\</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;                        (lambda_compton * parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>) * parent.qed_factor *\</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;                        pow(10.0, table[4][chi_index_T]);</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    <span class="keywordflow">if</span>(parent.od_factor &lt; parent.rod_factor)</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;    {</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    }</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;    <span class="comment">// Ｐ是chi 和eta的函数</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;    <span class="keywordtype">int</span> chi_index = bs_search(temp_qed, table[1]);</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; will generate pair with energy &quot;&lt;&lt;parent.energy/MeV&lt;&lt;&quot; MeV&quot;&lt;&lt;endl;</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; found chi_index &quot;&lt;&lt;chi_index&lt;&lt;endl;</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;    <span class="keywordflow">if</span>(chi_index &lt; 0 ||chi_index &gt; table_P[1].size())</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;    {</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;        <span class="comment">//cout&lt;&lt;&quot; field strength too low &quot;&lt;&lt;temp_qed&lt;&lt;endl;</span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;    }</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    <span class="keywordtype">double</span> random_P = random_generator();</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;    <span class="keywordtype">int</span> f_index = bs_search(random_P, table_P[1][chi_index]);</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; findex is &quot;&lt;&lt;f_index&lt;&lt;endl;</span></div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;    <span class="keywordflow">while</span>( f_index &lt;= 0 || f_index &gt; table_P[1][chi_index].size())</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;    {</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;        random_P = random_generator();</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;        f_index = bs_search(random_P, table_P[1][chi_index]);</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;    </div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;    }</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;    <span class="keywordtype">double</span> f_val = table[2][f_index];</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;    <span class="comment">//很明显ＩＤ这东西没法通用了</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;    child0 = parent;</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;    child1 = parent;</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;    child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#a190602549e77f92d18694bfac93774de">species</a> = 0;</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;    child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#a190602549e77f92d18694bfac93774de">species</a> = 2;</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;    child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> = (parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> - 2.0 * mc2) * (1.0 - f_val);</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;    child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> -= (parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> - 2.0 * mc2) * f_val;</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;    child0.lorentz_gamma = child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> / mc2;</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;    child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> = c_light_speed * sqrt(1.0 - 1.0 / pow(child0.lorentz_gamma, 2.0)) \</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;                      * normalize(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>);</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;    child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> = c_light_speed * sqrt(1.0 - 1.0 / pow(child1.lorentz_gamma, 2.0)) \</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;                      * normalize(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>);</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;    init_ptcls(child0);</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;    init_ptcls(child1);</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;    update_qed_factor(child0);</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    update_qed_factor(child1);</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; positron vel &quot;&lt;&lt;child1.velocity&lt;&lt;endl;</span></div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;    <span class="keywordflow">return</span> 2;</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;}</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;<span class="keywordtype">int</span> bh_pair_create(<span class="keyword">const</span> <span class="keywordtype">double</span>&amp; dt, <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; density, <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; parent, \</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; child0, <a class="code" href="../../d9/ddf/class____Ptcls.html">__Ptcls</a>&amp; child1, vector&lt;vector&lt;double&gt; &gt; tables1d, \</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;        vector&lt;vector&lt;vector&lt;double&gt; &gt; &gt; tables2d)</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;{</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    <span class="keywordflow">if</span>(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> &lt; 2.0 * mc2)</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;    {</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;    }</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    <span class="keywordtype">double</span> ek_all_a = parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>;</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;    <span class="keywordtype">int</span> ph_index = bs_search(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>, tables1d[0]);</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; ph f_index &quot;&lt;&lt;ph_index&lt;&lt;endl;</span></div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;    <span class="keywordflow">if</span>(ph_index &lt; 0)</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;    {</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    }</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;    <span class="keywordtype">int</span> max_ind = tables2d[0][0].size() - 1;</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;    <span class="comment">//double sigma_interp = (log(tables2d[1][ph_index + 1][max_ind]) -  \</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="comment">            log(tables2d[1][ph_index][max_ind])) / \</span></div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="comment">            (log(tables1d[1][ph_index + 1]) - log(tables1d[1][ph_index])) * \</span></div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;<span class="comment">            (log(parent.energy) - log(tables1d[1][ph_index])) + \</span></div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;<span class="comment">                          tables2d[1][ph_index][max_ind];</span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="comment"></span>    <span class="comment">/***</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;<span class="comment">    cout&lt;&lt;&quot; ph f_index &quot;&lt;&lt;ph_index&lt;&lt;endl;</span></div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;<span class="comment">    cout&lt;&lt;&quot; parent ek &quot;&lt;&lt;parent.energy&lt;&lt;&quot; in table &quot;&lt;&lt;tables1d[0][ph_index]&lt;&lt;endl;</span></div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;<span class="comment">    ***/</span></div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;    <span class="keywordtype">double</span> sigma_interp = tables2d[1][ph_index][max_ind];        </div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;    <span class="keywordtype">double</span> freq = Mod(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>) * density * sigma_interp * dt;</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;    <span class="keywordtype">double</span> probability = 1.0 - exp(-freq);</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;    <span class="comment">//cout&lt;&lt;&quot; probability is &quot;&lt;&lt;probability&lt;&lt;endl;</span></div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;    <span class="keywordflow">if</span>(random_generator() &gt; probability)</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;    {</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;    }</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;    <span class="keywordtype">double</span> ek_all = parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>;</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;    <span class="keywordtype">double</span> sigma_new = sigma_interp * random_generator();</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;    <span class="keywordtype">int</span> ek_index = bs_search(sigma_new, tables2d[1][ph_index]);</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;    <span class="keywordflow">if</span>(ek_index &lt; 0)</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;    {</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;    }</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;    child0 = parent;</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;    child1 = parent;</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;    <span class="keywordtype">double</span> ratio = (tables1d[1][ek_index + 1] - tables1d[1][ek_index]) / \</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;                   (tables2d[1][ph_index][ek_index + 1] - tables2d[1][ph_index][ek_index]) * \</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;                   (sigma_new - tables2d[1][ph_index][ek_index]) + tables1d[1][ek_index];</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;    ek_all = parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> - 2.0 * mc2;</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;    child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> = ek_all * ratio;</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;    child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> = ek_all - child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a>;</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;    child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#a4c8ff1d2388163601e00c6685af2859a">mass</a> = e_mass;</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;    child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#a4c8ff1d2388163601e00c6685af2859a">mass</a> = e_mass;</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;    child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#aec1deca97ac099553420c1f9cc138b3b">charge</a> = - e_charge;</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;    child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#aec1deca97ac099553420c1f9cc138b3b">charge</a> = e_charge;</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;    child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#a190602549e77f92d18694bfac93774de">species</a> = 0;</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;    child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#a190602549e77f92d18694bfac93774de">species</a> = 2;</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;    init_ptcls(child0);</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;    init_ptcls(child1);</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;    child0.lorentz_gamma = child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> / mc2 + 1.0;</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    child1.lorentz_gamma = child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">energy</a> / mc2 + 1.0;</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;    child1.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> = normalize(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>) * init_velocity(child1.lorentz_gamma);</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    child0.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a> = normalize(parent.<a class="code" href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">velocity</a>) * init_velocity(child0.lorentz_gamma);</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;    <span class="keywordflow">return</span> 2;</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;}</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="class____Ptcls_html"><div class="ttname"><a href="../../d9/ddf/class____Ptcls.html">__Ptcls</a></div><div class="ttdoc">单个粒子类信息，可以是任何种类粒子 </div><div class="ttdef"><b>Definition:</b> particles.h:9</div></div>
<div class="ttc" id="class____Ptcls_html_aeff96eb3ac159cdefef7f8e2fd03f49f"><div class="ttname"><a href="../../d9/ddf/class____Ptcls.html#aeff96eb3ac159cdefef7f8e2fd03f49f">__Ptcls::bfield</a></div><div class="ttdeci">__Vect3&lt; double &gt; bfield</div><div class="ttdoc">粒子所在位置磁场 </div><div class="ttdef"><b>Definition:</b> particles.h:74</div></div>
<div class="ttc" id="class____Ptcls_html_a9df3807cf12885312f760d8c7b400365"><div class="ttname"><a href="../../d9/ddf/class____Ptcls.html#a9df3807cf12885312f760d8c7b400365">__Ptcls::efield</a></div><div class="ttdeci">__Vect3&lt; double &gt; efield</div><div class="ttdoc">粒子所在位置电场 </div><div class="ttdef"><b>Definition:</b> particles.h:72</div></div>
<div class="ttc" id="class____Ptcls_html_ae16bdf32f375a3037b79b977dafb5b29"><div class="ttname"><a href="../../d9/ddf/class____Ptcls.html#ae16bdf32f375a3037b79b977dafb5b29">__Ptcls::energy</a></div><div class="ttdeci">double energy</div><div class="ttdoc">粒子能量，没有乘以权重 </div><div class="ttdef"><b>Definition:</b> particles.h:78</div></div>
<div class="ttc" id="class____Ptcls_html_aec1deca97ac099553420c1f9cc138b3b"><div class="ttname"><a href="../../d9/ddf/class____Ptcls.html#aec1deca97ac099553420c1f9cc138b3b">__Ptcls::charge</a></div><div class="ttdeci">double charge</div><div class="ttdoc">粒子电荷，没有乘以权重 </div><div class="ttdef"><b>Definition:</b> particles.h:80</div></div>
<div class="ttc" id="class____Ptcls_html_a190602549e77f92d18694bfac93774de"><div class="ttname"><a href="../../d9/ddf/class____Ptcls.html#a190602549e77f92d18694bfac93774de">__Ptcls::species</a></div><div class="ttdeci">int species</div><div class="ttdoc">粒子的种类：0电子，1：离子，2：正电子，3：光子 </div><div class="ttdef"><b>Definition:</b> particles.h:62</div></div>
<div class="ttc" id="class____Ptcls_html_a0709048b1598219650298d09ecda7a6b"><div class="ttname"><a href="../../d9/ddf/class____Ptcls.html#a0709048b1598219650298d09ecda7a6b">__Ptcls::velocity</a></div><div class="ttdeci">__Vect3&lt; double &gt; velocity</div><div class="ttdoc">粒子速度 </div><div class="ttdef"><b>Definition:</b> particles.h:68</div></div>
<div class="ttc" id="class____Vect3_html"><div class="ttname"><a href="../../da/d1a/class____Vect3.html">__Vect3</a></div><div class="ttdoc">三维矢量 </div><div class="ttdef"><b>Definition:</b> type.h:18</div></div>
<div class="ttc" id="class____Ptcls_html_a4c8ff1d2388163601e00c6685af2859a"><div class="ttname"><a href="../../d9/ddf/class____Ptcls.html#a4c8ff1d2388163601e00c6685af2859a">__Ptcls::mass</a></div><div class="ttdeci">double mass</div><div class="ttdoc">粒子质量，没有乘以权重 </div><div class="ttdef"><b>Definition:</b> particles.h:82</div></div>
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